diff --git a/rw-system.sh b/rw-system.sh
index 9954d48..935d5b7 100644
--- a/rw-system.sh
+++ b/rw-system.sh
@@ -206,7 +206,7 @@ mount -o bind /system/phh/empty /vendor/overlay/SysuiDarkTheme/SysuiDarkThemeOve
 
 if grep -qF 'PowerVR Rogue GE8100' /vendor/lib/egl/GLESv1_CM_mtk.so || \
 	grep -qF 'PowerVR Rogue' /vendor/lib/egl/libGLESv1_CM_mtk.so || \
-	(getprop ro.product.board | grep -qE -e msm8917 -e msm8937 -e msm8940);then
+	(getprop ro.product.board | grep -qiE -e msm8917 -e msm8937 -e msm8940);then
 
 	setprop debug.hwui.renderer opengl
 fi